Capture Screenshots: Windows key + S key

All along I’ve been using this cumbersome process to capture a portion of my screen:

Print Screen Key

Paste to Paint

Crop picture in Paint

Cut/paste to email or save

Today I accidentally ran across the Window+S shortcut which allows me to capture a portion of my screen and pastes it automatically to the clipboard and to OneNote.

Warning – this may be available only in Windows Vista Ultimate, not sure

ETA:  Thanks everyone for the feedback!  Alfred tested this for us and it is actually a OneNote 2007 feature and works in Vista and XP.